I've only been here to sign up for internet access, but they were incredibly helpful, especially…read morefor someone new in the country that didn't know what they were doing and didn't speak any German.
I very well may have been taken advantage of in terms of packages, considering I ended up with a landline, TV, internet, and a mobile plan, but all the prices seemed quite cheap to this American used to the lovely world of Comcast and Verizon.